<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>验证函数调用时this指向</title>
</head>
<body>
    <script>
        function foo(){
            console.log("foo函数:",this);
        }
        foo();

        var obj={name:"gkd"};
        obj.showThis=foo;

        obj.showThis();
    </script>
</body>
</html>